001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.upgrade.util;
016    
017    import com.liferay.portal.kernel.upgrade.StagnantRowException;
018    import com.liferay.portal.kernel.util.GetterUtil;
019    import com.liferay.portal.kernel.util.StringUtil;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public class DefaultPKMapper extends ValueMapperWrapper {
025    
026            public DefaultPKMapper(ValueMapper valueMapper) {
027                    super(valueMapper);
028            }
029    
030            @Override
031            public Object getNewValue(Object oldValue) throws Exception {
032                    String oldValueString = GetterUtil.getString(String.valueOf(oldValue));
033    
034                    if (oldValueString.equals("-1") || oldValueString.equals("0") ||
035                            oldValueString.equals("")) {
036    
037                            return new Long(0);
038                    }
039    
040                    try {
041                            ValueMapper valueMapper = getValueMapper();
042    
043                            if (oldValue instanceof String) {
044                                    oldValue = StringUtil.toLowerCase(oldValueString);
045                            }
046    
047                            return valueMapper.getNewValue(oldValue);
048                    }
049                    catch (StagnantRowException sre) {
050                            return new Long(0);
051                    }
052            }
053    
054    }